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Manual
THIEL
Scaffold Coupler
Right-angle Couplers
Swivel Couplers
Sleeve Couplers + joint pin
Beam Clamps
Van Thiel United b.v.
2014-01
Pagina: 1 van 7
Wedge couplers are used for a temporary connection of two tubes:
•
•
•
•
Right angle coupler: connecting two tubes in a right angle
Swivel coupler: connecting two tubes in any angle
Sleeve coupler: connecting two tubes in an end-to-end connection
Beam clamp: connecting a tube on a steel beam
The connection is obtained by tightening the flaps of the coupler on the tube and
hammering the wedge with a 500 gram hammer.
Standards
Van Thiel couplers are fully tested and in compliance with the European NEN-EN 74-1
standard in the following classes:
•
Class B for right angle couplers, certified for use as class BB coupler
•
Class B for swivel couplers
•
Class B for sleeve couplers
•
Values for beam clamps are obtained by testing.
Material
The base materials of the couplers follow the European standard and/or values stated in
EN 12811-2. All base materials are tested at the van Thiel factory according to our ISO
9000-2000 system.
Identification
Van Thiel couplers are recognizable by a marking in the flap of the coupler or in the fixed
wedge. Marking text:
EN74 B CU
Quality
The van Thiel quality department checks the quality of the couplers by means of ongoing
process checks and daily tests of the couplers.
Corrosion protection
The couplers are hot dip galvanized and have therefore a lifetime corrosion protection.
The corrosion protection is according to the following standards:
• Galvanising: EN-ISO 1461:2009.
• Sheradising: EN 13811:2003 and EN-ISO 14713-1 and -3:2010
Use
Use couplers only for connecting:
• Two steel scaffolding tubes with a outside diameter of 48,3 mm according to EN-39 or
equivalent.
• Two aluminium scaffolding tubes with a diameter of 48,3 mm and minimum wall
thickness of 4 mm.
Wedge couplers shall be tightened with a 500 grams hammer to the jarring blow.
This means two or three blows with a hammer of 500 grams using normal power.
We recommend hand and eye protection using wedge couplers.
Each coupler should be visually checked before using it. If any coupler is visually damaged
or deformed, disqualify the coupler and don’t use it anymore.
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2014-01
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THIEL right angle coupler
1
2
4
5
3
THIEL swivel coupler
4
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2014-01
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Pagina: 3 van 7
Right-angle coupler
Product number:
Weight:
Practical value:
Safety factor:
Product code in wedge:
Right-angle coupler:
EN 74:
B:
CÜ:
Corrosion protection:
EN 74-1 class B
P-1057
1,5 kg
9,1 kN
1,65
• EN74 B CU
Connecting two tubes at a right angle
Testing according EN 74-1:2005
Classification according to EN 74-1:2005
Control of production by means of an independent
certification institute
Galvanizing
Slipping force
½Fs
a
a
Failure force
½Fs
Fs
½Ff
a
a
½Ff
Pull apart
Fp
Ff
a
½Fp
Fs,c = 15 kN *)
Fs,c,γ = 9,1 kN (γ=1,65)
1 ≤ ∆2 ≤ 2 mm
Ff,c = 30 kN *)
Ff,c,γ= 18,2 kN (γ = 1,65)
a
½Fp
Fp = 30 kN
Fp,γ = 18,2 kN (γ= 1,65)
Loaded coupler is supported when tested for failure.
*) Also certified for use as a class BB coupler: Fs,c = 25 kN, Ff,c = 45 kN.
Cruciform bending stiffness
MT
Moment of rotation
MB
MT
Steel tube:
MB= 0,48 kNm γ = 1,65 c1= 15 kNm/rad
MB= 0,80 kNm γ = 1,00 c2= 6,0 kNm/rad
MT1= 100 Nm
MT2= 130 Nm
φ = +/- 1°
φ = +/- 2°
Aluminium tube:
MB= 0,48 kNm γ = 1,65 c1 = 13 kNm/rad
MB= 0,80 kNm γ = 1,00 c2 = 5 kNm/rad
Note: When using couplers according to EN 12811 specific interaction formulas for
coupler checks are available.
Van Thiel United b.v.
2014-01
Pagina: 4 van 7
Swivel coupler
Product number:
Weight:
Practical value:
Safety factor:
Product code in wedge:
Swivel coupler:
EN 74:
B:
CÜ:
Corrosion protection:
EN 74-1 class B
P-1126
1,7 kg
9,1 kN
1,65
•
EN74 B CU
Connecting two tubes at an angle
Testing according to NEN-EN 74-1:2005
Classification according to EN 74-1:2005
Control of production by means of an independent
certification institute
Galvanizing
Slipping force
½Fs
a
Fs = 15 kN
Fs,γ= 9,1 kN
a
Failure force
½Fs
Fs
(γ=1,65) 1 ≤ ∆2 ≤2 mm
½Ff
a
a
½Ff
F
f
Ff = 20 kN
Ff,γ= 12,1 kN (γ = 1,65)
Loaded coupler is supported when tested for failure.
Note: When using couplers according to EN 12811 specific interaction formulas for
coupler checks are available.
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2014-01
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Sleeve coupler
Product number:
Weight:
Practical value:
Safety factor:
Product code in wedge:
Sleeve coupler & joint pin:
EN 74:
B:
CÜ:
Corrosion protection:
with joint pin
EN 74-1 class B
P-1125 + P-1140
1,7 kg
5,45 kN (pull apart)
0,85 kNm (moment)
1,65
• EN74 B CU
Connecting two tubes in axial direction
Testing according EN 74-1:2005
Classification according to EN 74-1:2005
Control of production by means of an independent
certification institute
Galvanizing
Slipping force
Fs
F1
Moment
Fs
l/4 l/4
l/2
l/2
l
Fs,c= 9 kN
Fs,c,γ= 5,45 kN (γ = 1,65)
Magv F1 = 1,4 kNm
Magv F1,γ = 0,85 kNm (γ = 1,65)
Always use sleeve coupler with joint pin
Note: When using couplers according to EN 12811 specific interaction formulas for
coupler checks are available.
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2014-01
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Beam clamp
Type wedge
Product number:
Weight:
Practical value:
Safety factor:
Product code in wedge:
Beamclamp:
Corrosion protection:
P-1069
1,3 kg
36 kN (use in pairs)
1,65
• HOLLAND
Connecting tubes on steel beams (I beam)
Sheradising
Pull apart
Slipping force
F1
F
F= 60 kN per pair of couplers
Fγ= 36,0 kN (γ = 1,65 )
F
F1= 10 kN
F1γ= 6,0 kN
Always use in pairs.
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2014-01
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